British Press Peddles Puzzle

Britain's national newspapers may disagree on politics, but they agree on the story of the season: Su Doku is here! An addictive puzzle in which the numbers 1 to 9 must occur only once in every row, column and box within a grid, Su Doku has Britons hooked.

Since its debut in the Times last November, almost every major paper in the country, desperate not to miss any chance to build circulation, has acquired a version. Tabloid variants come with celebrity endorsements and last week, after the Guardian launched its puzzle, the Times fought back...